if ($uref->is_node || $uref->is_aranea) {
$ur = $nref->add($user, $thing->{v}, $thing->{h});
push @{$thing->{pc19n}}, $ur if $ur;
if ($uref->is_node || $uref->is_aranea) {
$ur = $nref->add($user, $thing->{v}, $thing->{h});
push @{$thing->{pc19n}}, $ur if $ur;